Improvement in lanterns



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Lantern.

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Patented Sept. 3,'1878.,

N. PEYERS, PNOTO-LITHOGRAPHER, WASHINGTON. D. C.

www w w W JAMES A. COWLES, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN LANTERNS.

Specification forming part of Letters Patent No. 207,716, datedSeptember 3, 1878; application filed June 25, 1878.

To all whom it may concern Be it known that I, JAMES A. COWLES, of thecity of Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Lanterns, of which thisis the specification:

The nature and object of this invention is to construct a lantern havinga pipe or pipes leading from above the flame around and down to theburner, dispensing with the ordinary bell or funnel located at the upperend of the pipes, and used for the purpose of conducting and guiding theascending air into pipes, having found by actual experiment that abetter result can be obtained without the bell or funnel than with it.

Figure l is a vertical sectional view. Fig. 2 is a side view of the top.

G is the oil-pot, placed upon the ordinary base. At top of the oil-potis the burner, and surrounding the burner is an air-chamber. The burneris shown at E. The cap of the burner embraces the air-reservoir. A B arepipes leading from the air-reservoir around the burner up to a properdistance above the globe, thence turn toward each other horizontallyuntil they are within the upper end of the globe, when they descendparallel to each other to a proper distance within the upper end of theglobe.

F is a perforated diaphragm, located upon the burner, with the outercircular edge turned upward. Upon this diaphragm is located the globe D.G is the cap at the top of the globe. Through this cap the upper ends ofthe pipes A B descend. This cap has perforatrons or openings at theside. It may also have perforations at the top, provided they are not solarge as to allow a descending current of air sufficiently strong toextinguish the flame.

a, Fig. 2, is a key, which holds in position the cap 0. It has a fixedyielding point at either the bail b or the pipes above the cap, and theother end swings around against the cap (3 and holds it in position onthe globe, and it also holds the globe in position. At the upper end ofthe wick-tube is placed a protecting-plate, to prevent the air strikingthe flame at its base.

The operation of my invention is as follows: The wick is lighted, whenthe ascending current of heated air enters the ends of the pipe locatedabove the flame, and, having a propelling force, drives the air alreadywithin the pipes into the reservoir around the burner, whence it isimpinged on to the flame. This forced current of air is aided in itscourse through the pipes by the combustion at the wick-tube, and also bythe cooling of the air in the lower portion of the pipes. Fresh airenters also the globe through the perforated diaphragm F, outside of theburner. Sufficient air enters the globe through the perforated diaphragmF to purify the air entering the ends of the pipes above the flame, soas to make it flame-sustaining.

The cap 0 is employed to hold in position the globe, and also to preventa descending current of air. The top of this cap 0 can be made flat.This cap 0 contributes in no manner or form to the quantity of airentering the ends of the pipes A B above the flame. A flame of equalbrightness can be produced by removing the cap and leaving the top ofthe globe open. The ends of the pipes above the flame are located withinthe globe and below its upper end. The object of this is to prevent theascending air at the instant it enters the pipes from lateralinfluences. Any construction that will prevent this lateral influence atthis instant of time will answer the purpose.

There being no disturbance or lateral influences upon theascendingcurrent of air at the instant it enters the pipes A B above the flame,any position the lantern may be placed in while in use does not diminishor cause the flame to retreat within the cap of the burner, nor is theflame extinguished when the lantern is used in violent winds.

I am aware that lamps and lanterns have been used having pipes leadingfrom a point over the flame around, down to, and connected with, theburner. All of them have at the end of the pipes or pipe over the flamean inverted funnel or a bell, and from this inverted funnel or bellleads the pipe orpipe's. This-is found in the French patent of P.Tespaz, 1826, Orry, Nerry, and De Corneillie, May 4, 1827, and also inother French patents; also in the English patent granted to JohnBraithwaite in 1847, and also in other English patents. It is found inpatents granted by the United ArnNrO Icn.

States, viz., No. 63,480, April 2, 1867; in patents numbered 65,230,73,012, 89,770, 86,549, granted at Various times to John H. Irwin; Inall these patents the ends of the pipes over 11gb? flame terminate ininverted funnels or e ls.

I expressly disclaim any and all matters and things described andclaimed in any patents above mentioned. I firmly believe that the methodherein described of constructin g and arranging the pipes is novel, andworks on a different principle from any methods heretofore employed.

I claim- 1. In a lantern, the pipes A B, constructed and arrangedsubstantially as shown and described.

described.

' JAMES A. GOWLES.

Witnesses:

WM. R. PAGE, A. H. LAWRENCE.

